<script setup>
import { getSubCategory,getSubCategoryGoods } from '@/apis/category';
import {ref,onMounted} from 'vue'
import { useRoute } from 'vue-router';
import GoodsItem from '../Home/components/GoodsItem.vue';
// 获取面包屑导航数据
const router=useRoute()
const SubCategoryData=ref({})
onMounted(async()=>{
  try {
     const res=await getSubCategory(router.params.id)
    //  console.log(res);
     SubCategoryData.value=res.result
  } catch (error) {
     console.log(error);
  }
})
// 获取基础商品列表数据
const goodsList=ref([])
// 定义需要传入的字段数据
const reqData=ref({
  categoryId: router.params.id,
  page: 1,
  pageSize: 20,
  sortField: 'publishTime'
})
onMounted(async()=>{
  try {
     const res=await getSubCategoryGoods(reqData.value)
     console.log(res);
     goodsList.value=res.result.items
  } catch (error) {
     console.log(error);
  }
})
// tab切换回调实时渲染（或者用watch监听）
const tabChange=async()=>{
  // 只要切换了页面重置为1开始显示
  reqData.value.page=1
  try {
     const res=await getSubCategoryGoods(reqData.value)
    //  console.log(reqData.value.sortField);
     goodsList.value=res.result.items
  } catch (error) {
     console.log(error);
  }
}
// 定义页面是否继续滚动
const disabled=ref(false)
// 实现页面无限滚动
const load=async()=>{
  // 获取下一页的数据
  reqData.value.page+=1
  const res=await getSubCategoryGoods(reqData.value)
  // 将新数组与老数组拼接一起渲染
  goodsList.value=[...goodsList.value,...res.result.items]
  // 全部加载完毕，停止监听
  if(res.result.items.length===0){
    disabled.value=true
  }

}

</script>

<template>
  <div class="container ">
    <!-- 面包屑 -->
    <div class="bread-container">
      <el-breadcrumb separator=">">
        <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item :to="{ path: `/category/${SubCategoryData.parentId}` }">{{ SubCategoryData.parentName}}
        </el-breadcrumb-item>
        <el-breadcrumb-item>{{ SubCategoryData.name }}</el-breadcrumb-item>
      </el-breadcrumb>
    </div>
    <div class="sub-container">
      <el-tabs v-model="reqData.sortField" @tab-change="tabChange">
        <el-tab-pane label="最新商品" name="publishTime"></el-tab-pane>
        <el-tab-pane label="最高人气" name="orderNum"></el-tab-pane>
        <el-tab-pane label="评论最多" name="evaluateNum"></el-tab-pane>
      </el-tabs>

      <div class="body" 
        v-infinite-scroll="load"
       :infinite-scroll-disabled="disabled"
       >
         <!-- 商品列表-->
          <GoodsItem v-for="goods in goodsList" :key="goods.id" :good="goods"></GoodsItem>
      </div>

    </div>
  </div>

</template>



<style lang="scss" scoped>
.bread-container {
  padding: 25px 0;
  color: #666;
}

.sub-container {
  padding: 20px 10px;
  background-color: #fff;

  .body {
    display: flex;
    flex-wrap: wrap;
    padding: 0 10px;
  }

  .goods-item {
    display: block;
    width: 220px;
    margin-right: 20px;
    padding: 20px 30px;
    text-align: center;

    img {
      width: 160px;
      height: 160px;
    }

    p {
      padding-top: 10px;
    }

    .name {
      font-size: 16px;
    }

    .desc {
      color: #999;
      height: 29px;
    }

    .price {
      color: $priceColor;
      font-size: 20px;
    }
  }

  .pagination-container {
    margin-top: 20px;
    display: flex;
    justify-content: center;
  }


}
</style>